36 lines
736 B
C++
36 lines
736 B
C++
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#include <bits/stdc++.h>
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using namespace std;
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const int N = 10010;
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const int M=110;
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const int mod = 20123;
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int n, m;
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int k;
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int a[N][N];
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int b[N];
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int num[N][M];
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int main() {
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cin >> n >> m;
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int res = 0;
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for (int i = 0;i<n;i++){
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for (int j = 0; j < m;j++){
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cin >> a[i][j] >> num[i][j];
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b[i] += a[i][j];
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}
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}
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cin >> k;
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for (int i = 0; i < n;i++){
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int t = num[i][k];
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res = (res + t) % mod;
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t %= b[i];
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if (!t) t = b[i];
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int sum = 0;
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while(sum<t){
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sum += a[i][k];
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if (sum == t) break;
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k = (k + 1) % m;
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}
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}
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cout << res << endl;
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return 0;
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}
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