제출 #824866

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
824866		alvingogo	메기 농장 (IOI22_fish)	C++17	0 / 100	33 ms	14296 KiB

fish

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

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

컴파일 시 표준 에러 (stderr) 메시지

fish.cpp:8:15: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+16' to '2147483647' [-Woverflow]
    8 | const int inf=1e16;
      |               ^~~~
fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:10:15: warning: unused variable 'ans' [-Wunused-variable]
   10 |     long long ans=0;
      |               ^~~

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