记录编号 |
98764 |
评测结果 |
AAAAAAAAA |
题目名称 |
工程规划 |
最终得分 |
100 |
用户昵称 |
OI永别 |
是否通过 |
通过 |
代码语言 |
C++ |
运行时间 |
0.007 s |
提交时间 |
2014-04-24 17:21:03 |
内存使用 |
0.38 MiB |
显示代码纯文本
#include<cstdio>
#include<cstring>
#include<cstdlib>
#include<iostream>
#include<algorithm>
#include<cmath>
using namespace std;
#define N 1010
#define M 5011
#define INF 0x3f3f3f3f
struct arr{
int ff,tt,ww;
}c[M];
int dis[N];
int tot = 0;
bool flag = 0;
inline void add(int x,int y,int z){
c[++tot].ff = x;
c[tot].tt = y;
c[tot].ww = z;
return;
}
int n,m;
bool bellman_ford(){
for (int i = 1; i <= n; i++) dis[i] = -100000;
dis[1] = 0;
for (int i = 1; i <= n; i ++){
flag = 0;
for (int j = 1; j <= tot; j++){
if (dis[c[j].tt] < dis[c[j].ff] + c[j].ww){
dis[c[j].tt] = dis[c[j].ff] + c[j].ww;
flag = 1;
}
}
if (!flag) {
return 1;
}
}
if (flag){
for (int i = 1; i <= n; i ++){
if (dis[c[i].tt] < dis[c[i].ff] + c[i].ww){
return 0;
}
}
}
return 1;
}
void print(){
int temp = 0x3f3f3f3f;
for (int i = 1; i <= n; i ++) temp = min(temp,dis[i]);
for(int i = 1; i <= n; i++) printf("%d\n", abs(temp - dis[i]));
return;
}
int main(){
freopen("work.in","r",stdin);
freopen("work.out","w",stdout);
scanf("%d%d",&n,&m);
int x,y,z;
for (int i = 1; i <= m; i++){
scanf("%d%d%d",&x,&y,&z);
add(x,y,-z);
}
if (bellman_ford()) print();
else puts("NO SOLUTION");
return 0;
}