제출 #824871

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
824871		alvingogo	Catfish Farm (IOI22_fish)	C++17	0 / 100	21 ms	6700 KiB

fish

#include "fish.h"
#include <bits/stdc++.h>
#define fs first
#define sc second
#define p_q priority_queue
using namespace std;

const long long inf=1e16;
long long max_weights(int n, int m, vector<int> x, vector<int> y, vector<int> w) {
    long long ans=0;
    vector<vector<pair<int,int> > > v(n);
    vector<int> q(n);
    for(int i=0;i<m;i++){
        v[x[i]].push_back({y[i],w[i]});
        q[x[i]]=w[i];
    }
    vector<array<int,3> > dp(n);
    for(int i=0;i<n;i++){
        dp[i][0]=dp[i][1]=dp[i][2]=0;
    }
    dp[0][2]=-inf;
    for(int i=1;i<n;i++){
        dp[i][0]=max({dp[i-1][0],dp[i-1][1]+q[i-1],dp[i-1][2]});
        dp[i][1]=max({dp[i-1][1],dp[i-1][2]});
        dp[i][2]=dp[i-1][0]+q[i];
    }
    return max({dp[n-1][0],dp[n-1][1],dp[n-1][2]});
}

컴파일 시 표준 에러 (stderr) 메시지

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:21:14: warning: overflow in conversion from 'long long int' to 'std::array<int, 3>::value_type' {aka 'int'} changes value from '-10000000000000000' to '-1874919424' [-Woverflow]
   21 |     dp[0][2]=-inf;
      |              ^~~~
fish.cpp:10:15: warning: unused variable 'ans' [-Wunused-variable]
   10 |     long long ans=0;
      |               ^~~

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