// Slower C++ solution:
#include <bits/stdc++.h>



/* FastIO by rsk0315 (last update: 2018/02/21 00:36) */



namespace FastIn {

    static constexpr size_t BUF_SIZE=1<<17, INT_LEN=24, FLT_LEN=400;

    static char buf[BUF_SIZE|1]={}, *pos=buf, *endbuf=nullptr;

    FILE *fin;



    inline bool rebuffer() {

        // returns true <=> there is at least one unread character

        size_t rest=endbuf-pos;

        if (buf+rest > pos) {

            // buf[:pos] and buf[-pos:] are overlapping, which std::memcpy()

            // causes undefined behavior.

            return true;

        }



        std::memcpy(buf, pos, rest);

        pos = buf;

        size_t len=std::fread(pos+rest, 1, BUF_SIZE-rest, fin);

        *(endbuf = buf + (rest+len)) = 0;



        return *pos;

    }



    inline bool scan(char &in) {

        if ((in = *pos)) {

            ++pos;

            return true;

        }



        return rebuffer() && (in = *pos++);

    }



    inline bool scan(char *in) {

        if ((*in = *pos) == 0) {

            if (rebuffer() && (*in = *pos) == 0) {

                return false;

            }

        }

        ++in;

        while (true) {

            if ((*in = *pos++) == 0) {

                if (rebuffer() && (*in = *pos++) == 0) {

                    return true;

                }

            }

            ++in;

        }

    }



    inline bool scan(double &in) {

        if (pos + FLT_LEN >= endbuf && !rebuffer()) {

            in = 0.0;

            return false;

        }



        char *tmp;

        in = std::strtod(pos, &tmp);

        pos = tmp;

        return true;

    }



    template <class Int>

    inline bool scan(Int &in) {

        in = 0;



        // assume that no redundant whitespace appears

        if (pos + INT_LEN >= endbuf && !rebuffer()) {

            return false;

        }



        if (std::is_signed<Int>::value) {

            if (*pos == '-') {

                in = ~*++pos+'1';

                while (*++pos >= '0') {

                    in = in*10 + ~*pos+'1';

                }

                ++pos;

                return true;

            }

        }



        // assume that numbers are separated by the character whose value is

        // less than '0' (e.g. whitespaces, newlines)

        do {

            in = in*10 + *pos-'0';

        } while (*++pos >= '0');

        ++pos;

        return true;

    }



    inline bool eat() {

        if (*pos > ' ') {

            return true;

        }



        do {

            if (*pos == 0 && !rebuffer()) {

                return false;

            }

        } while (*++pos <= ' ');



        return true;

    }



    inline bool eat(char ch) {

        if (*pos == ch) {

            return true;

        }



        do {

            if (*pos == 0 && !rebuffer()) {

                return false;

            }

        } while (*++pos != ch);



        return true;

    }



    class Scanner {

        bool rebuffer() {

            return FastIn::rebuffer();

        }



    public:

        Scanner(FILE *fin=stdin) {

            FastIn::fin = fin;

            endbuf = pos + std::fread(buf, 1, BUF_SIZE, fin);

        }



        template <class T>

        inline bool scan(T &in) {

            return FastIn::scan(in);

        }



        template <class First, class... Rest>

        inline bool scan(First &in, Rest &...ins) {

            return scan(in) && scan(ins...);

        }

    };

}



template <class RandomIt>

auto rsort(RandomIt first, RandomIt last)

-> typename std::enable_if<std::is_integral<

        typename RandomIt::value_type::first_type>::value>::type

{

    using PairType = typename RandomIt::value_type;

    using KeyType = typename PairType::first_type;



    intmax_t cur_shift=0, max_exp=sizeof(KeyType);

    std::vector<PairType> work(last-first);

    for (int i=0; i<max_exp; ++i) {

        size_t num[256]={};



        for (RandomIt it=first; it<last; ++it)

            ++num[((it->first)>>cur_shift)&255];



        {

            size_t tmp=0;

            for (int j=0; j<256; ++j)

                std::swap(tmp, num[j]+=tmp);

        }



        for (RandomIt it=first; it<last; ++it)

            work[num[((it->first)>>cur_shift)&255]++] = *it;



        {

            size_t j=0;

            for (RandomIt it=first; it<last; ++it)

                *it = work[j++];

        }



        cur_shift += 8;

    }



    if (!std::is_signed<KeyType>::value) return;



    RandomIt mid=last;

    for (RandomIt it=last; --it>=first;)

        if ((it->first) >= 0) {

            mid = ++it;

            break;

        }



    if (mid == last)

        return;



    std::copy(first, mid, work.begin()+(last-mid));

    std::copy(mid, last, work.begin());

    std::copy(work.begin(), work.end(), first);

}



/* kokomade */



int main() {

    using namespace std;

    constexpr unsigned long maxN = 200010;

    FastIn::Scanner in;

    unsigned long N;

    in.scan(N);

    array<unsigned long, maxN> perm;

    {

        vector<pair<long, long>> p(N);

        for(auto& i : p)in.scan(i.first, i.second);

        rsort(p.begin(), p.end());

        for(unsigned long i = 0; i < N; ++i)p[i] = {p[i].second, i + 1};

        rsort(p.begin(), p.end());

        transform(p.cbegin(), p.cend(), perm.begin(), [](auto i){return i.second;});

    }



    constexpr unsigned long MOD = 998244353;

    array<unsigned long, maxN> binary;

    unsigned long n = binary[0] = 1;

    generate(binary.begin() + 1, binary.end(), [&n](){n <<= 1;return n -= (n >= MOD) * MOD;});



    array<unsigned long, maxN> fenwick_tree{};

    auto que = [&fenwick_tree, &N](unsigned long i){

        unsigned long s{0}, j{i};

        while (i > 0) { s += fenwick_tree[i]; i -= i & -i; }

        while (j <= N) { ++fenwick_tree[j]; j += j & -j; }

        return s;

    };



    array<unsigned long, maxN> coef{};

    coef[N] = N + MOD - 4;

    for(unsigned long i = 0; i != N; ++i){

        auto q = que(perm[i]);

        ++coef[q];

        ++coef[i - q];

        ++coef[perm[i] - q - 1];

        ++coef[N - i - perm[i] + q];

    }



    cout << inner_product(binary.begin(), binary.end(), coef.begin(), 4 + MOD - N) % MOD << endl;

    return 0;

}

// Faster C++ solution for the same problem (measured speedup: 1.6375652915979548x):
#include <bits/stdc++.h>



/* FastIO by rsk0315 (last update: 2018/02/21 00:36) */



namespace FastIn {

    static constexpr size_t BUF_SIZE=1<<17, INT_LEN=24, FLT_LEN=400;

    static char buf[BUF_SIZE|1]={}, *pos=buf, *endbuf=nullptr;

    FILE *fin;



    inline bool rebuffer() {

        // returns true <=> there is at least one unread character

        size_t rest=endbuf-pos;

        if (buf+rest > pos) {

            // buf[:pos] and buf[-pos:] are overlapping, which std::memcpy()

            // causes undefined behavior.

            return true;

        }



        std::memcpy(buf, pos, rest);

        pos = buf;

        size_t len=std::fread(pos+rest, 1, BUF_SIZE-rest, fin);

        *(endbuf = buf + (rest+len)) = 0;



        return *pos;

    }



    inline bool scan(char &in) {

        if ((in = *pos)) {

            ++pos;

            return true;

        }



        return rebuffer() && (in = *pos++);

    }



    inline bool scan(char *in) {

        if ((*in = *pos) == 0) {

            if (rebuffer() && (*in = *pos) == 0) {

                return false;

            }

        }

        ++in;

        while (true) {

            if ((*in = *pos++) == 0) {

                if (rebuffer() && (*in = *pos++) == 0) {

                    return true;

                }

            }

            ++in;

        }

    }



    inline bool scan(double &in) {

        if (pos + FLT_LEN >= endbuf && !rebuffer()) {

            in = 0.0;

            return false;

        }



        char *tmp;

        in = std::strtod(pos, &tmp);

        pos = tmp;

        return true;

    }



    template <class Int>

    inline bool scan(Int &in) {

        in = 0;



        // assume that no redundant whitespace appears

        if (pos + INT_LEN >= endbuf && !rebuffer()) {

            return false;

        }



        if (std::is_signed<Int>::value) {

            if (*pos == '-') {

                in = ~*++pos+'1';

                while (*++pos >= '0') {

                    in = in*10 + ~*pos+'1';

                }

                ++pos;

                return true;

            }

        }



        // assume that numbers are separated by the character whose value is

        // less than '0' (e.g. whitespaces, newlines)

        do {

            in = in*10 + *pos-'0';

        } while (*++pos >= '0');

        ++pos;

        return true;

    }



    inline bool eat() {

        if (*pos > ' ') {

            return true;

        }



        do {

            if (*pos == 0 && !rebuffer()) {

                return false;

            }

        } while (*++pos <= ' ');



        return true;

    }



    inline bool eat(char ch) {

        if (*pos == ch) {

            return true;

        }



        do {

            if (*pos == 0 && !rebuffer()) {

                return false;

            }

        } while (*++pos != ch);



        return true;

    }



    class Scanner {

        bool rebuffer() {

            return FastIn::rebuffer();

        }



    public:

        Scanner(FILE *fin=stdin) {

            FastIn::fin = fin;

            endbuf = pos + std::fread(buf, 1, BUF_SIZE, fin);

        }



        template <class T>

        inline bool scan(T &in) {

            return FastIn::scan(in);

        }



        template <class First, class... Rest>

        inline bool scan(First &in, Rest &...ins) {

            return scan(in) && scan(ins...);

        }

    };

}



template <class RandomIt>

auto rsort(RandomIt first, RandomIt last)

-> typename std::enable_if<std::is_integral<

        typename RandomIt::value_type::first_type>::value>::type

{

    using PairType = typename RandomIt::value_type;

    using KeyType = typename PairType::first_type;



    intmax_t cur_shift=0, max_exp=sizeof(KeyType);

    std::vector<PairType> work(last-first);

    for (int i=0; i<max_exp; ++i) {

        size_t num[256]={};



        for (RandomIt it=first; it<last; ++it)

            ++num[((it->first)>>cur_shift)&255];



        {

            size_t tmp=0;

            for (int j=0; j<256; ++j)

                std::swap(tmp, num[j]+=tmp);

        }



        for (RandomIt it=first; it<last; ++it)

            work[num[((it->first)>>cur_shift)&255]++] = *it;



        {

            size_t j=0;

            for (RandomIt it=first; it<last; ++it)

                *it = work[j++];

        }



        cur_shift += 8;

    }



    if (!std::is_signed<KeyType>::value) return;



    RandomIt mid=last;

    for (RandomIt it=last; --it>=first;)

        if ((it->first) >= 0) {

            mid = ++it;

            break;

        }



    if (mid == last)

        return;



    std::copy(first, mid, work.begin()+(last-mid));

    std::copy(mid, last, work.begin());

    std::copy(work.begin(), work.end(), first);

}



/* kokomade */



int main() {

    using namespace std;

    constexpr int maxN = 200010;

    FastIn::Scanner in;

    int N;

    in.scan(N);

    array<int, maxN> perm;

    {

        vector<pair<int, int>> p(N);

        for(auto& i : p)in.scan(i.first, i.second);

        rsort(p.begin(), p.end());

        for(unsigned int i = 0; i < N; ++i)p[i] = {p[i].second, i + 1};

        rsort(p.begin(), p.end());

        transform(p.cbegin(), p.cend(), perm.begin(), [](auto i){return i.second;});

    }



    constexpr unsigned long MOD = 998244353;

    array<unsigned long, maxN> binary;

    unsigned long n = binary[0] = 1;

    generate(binary.begin() + 1, binary.end(), [&n](){if(n >= MOD)n -= MOD;return n <<= 1;});



    array<int, maxN> fenwick_tree{};

    auto que = [&fenwick_tree, &N](int i){

        int s{0}, j{i};

        while(i){

            s += fenwick_tree[i];

            i -= i & -i;

        }

        while(j <= N){

            ++fenwick_tree[j];

            j += j & -j;

        }

        return s;

    };



    array<int, maxN> coef{};

    coef[N] = N + MOD - 4;

    for(int i = 0; i != N; ++i){

        auto p = perm[i], q = que(p);

        ++coef[q];

        ++coef[i - q];

        ++coef[p - q - 1];

        ++coef[N - i - p + q];

    }



    cout << inner_product(binary.begin(), binary.begin() + N + 1, coef.begin(), 4 + MOD - N) % MOD << endl;

    return 0;

}