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谁能告诉我这个程序为什么错了

Posted by chengmingvictor at 2005-07-26 22:17:46 on Problem 2496
#include <iostream>
#include <cmath>
#include <algorithm>
using namespace std;

int n, p;
int const MAX = 100;
int adj[MAX][MAX];
int list[MAX*MAX];

int main(){
	int cases;
	cin>>cases;
	for(int c = 0; c < cases; c++)
	{
		cout<<"Scenario #"<<c+1<<':'<<endl;
		cin>>p>>n;
		for(int i = 0; i < n; i++)
			for(int j = 0; j < n; j++)
			{
				cin>>adj[i][j];
				adj[i][j] &= 0xfffffff;
			}

		//Floyd algorithm
		for(i = 0; i < n; i++)
			for(int j = 0; j < n; j++)
				for(int k = 0; k < n; k++)
					if(adj[i][k] + adj[k][j] < adj[i][j])
						adj[i][j] = adj[i][k] + adj[k][j];
		int t = 0;
		for(i = 0; i < n; i++)
			for(int j = 0; j < n; j++)
				if(i != j)
					list[t++] = adj[i][j];
		sort(list, list + t);
		int index = ceil(t * p / 100.0) -1; 
		cout<<list[index]<<endl<<endl;
	}
	return 0;
}



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