func_code_string: #include <bits/stdc++.h>   using namespace std;   void solve() {     long long int n, m, k, kk, x, y;     cin >> n >> m >> k;     kk = k;     long long int a[m];     for (long long int i = 0; i < m; i++) a[i] = 9999999999;     for (long long int i = 0; i < n; i++) {       cin >> x >> y;       a[x - 1] = min(a[x - 1], y);     }     for (long long int i = 0; i < m; i++) {       if (a[i] >= kk)         kk = 0;       else         kk -= a[i];       if (kk == 0) break;     }     cout << k - kk;     return;   }   int main() {     ios::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     long long int t = 1;     while (t--) solve();     cerr <<   n           <<  Time elapsed :  << clock() * 1000.0 / CLOCKS_PER_SEC <<   ms n ;   }   