标签:style blog color io os ar for sp div
题意:给一个矩阵,里面有正负数,求子矩阵和的最大值
#include <iostream> #include <cstdio> #include <stdlib.h> #include <memory.h> using namespace std; int s[105][105],dp[105],n,temp[105]; int main() { // freopen("in.txt","r",stdin); cin>>n; for(int i=1;i<=n;i++) for(int j=1;j<=n;j++) cin>>s[i][j]; int maxx = 0; for (int i=1;i<=n;i++) //start from line i { memset(temp,0,sizeof(temp)); for (int j=i;j<=n;j++) //end at line j { for (int k=1;k<=n;k++) { temp[k]+=s[j][k]; if (temp[k]+dp[k-1]>0) dp[k]=temp[k]+dp[k-1]; else dp[k]=0; if (maxx<dp[k]) maxx =dp[k]; } } } cout << maxx << endl; }
标签:style blog color io os ar for sp div
原文地址:http://www.cnblogs.com/balfish/p/4014582.html