noip宝藏_拼图寻宝图书馆

#include <bits/stdc++.h>
using namespace std;

const int N = 10009, M = 109;
int n, m, a[N][M], num[N][M], qty[N];

int main() { 
   
	scanf("%d%d",&n, &m);
	for (int i = 1; i <= n; i ++ ) { 
   
		for (int j = 0; j < m; j ++ ) { 
   
			scanf("%d%d", &a[i][j], &num[i][j]);
			qty[i] += a[i][j];			//qty[i]为第i层梯子的个数 
		}
	}

	int j, ans = 0;
	scanf("%d", &j);					//j号房间 
	
	for (int i = 1; i <= n; i ++ ) { 
   
		ans = (ans + num[i][j]) % 20123;//加上j号房间里的数字 
		
		int k = num[i][j] % qty[i];		
		if (k == 0) k = qty[i];			//在这一层找到第 k 个有梯子的房间 
		
		int cnt = 0;
		while (true) { 
   
			if (a[i][j]) { 
   
				cnt ++ ;
				if (cnt == k) { 
   
					break;
				}
			}
			j = (j + 1) % m;			//去下一个房间 
		}
	}	
	printf("%d\n", ans);
	
	return 0;
}