Submission #593897

#	Time	Username	Problem	Language	Result	Execution time	Memory
593897		FatihSolak	Toy Train (IOI17_train)	C++17	23 / 100	1693 ms	1252 KiB

train

#include "train.h"
#include <bits/stdc++.h>
#define N 5005
using namespace std;
int dp[N];
int ndp[N];
vector<int> adj[N];
vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
	int n = a.size();
	int m = u.size();
	for(int i = 0;i<n;i++){
		dp[i] = n;
	}
	for(int i = 0;i<m;i++){
		adj[u[i]].push_back(v[i]);
	}
	for(int i=0;i<4*n;i++){
		for(int j = 0;j<n;j++){
			if(a[j]){
				ndp[j] = -1e18;
				for(auto u:adj[j]){
					ndp[j] = max(ndp[j],dp[u] + r[j]*n - 1);
				}
				ndp[j] = min(ndp[j],n);
			}
			else{
				ndp[j] = 1e18;
				for(auto u:adj[j]){
					ndp[j] = min(ndp[j],dp[u] + r[j]*n - 1);
				}
				if(ndp[j] <= 0){
					ndp[j] = -1e9;
				}
			}
		}
		for(int j = 0;j<n;j++){
			dp[j] = ndp[j];
		}
	}
	vector<int> res(n);
	for(int i = 0; i < n; i++){
		res[i] = (dp[i] >= 0);
	}
	return res;
}

Compilation message (stderr)

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:20:14: warning: overflow in conversion from 'double' to 'int' changes value from '-1.0e+18' to '-2147483648' [-Woverflow]
   20 |     ndp[j] = -1e18;
      |              ^~~~~
train.cpp:27:14: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   27 |     ndp[j] = 1e18;
      |              ^~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 11
• Subtask 4: 11 / 11
• Subtask 5: 12 / 12
• Subtask 6: 0 / 51