제출 #1297008

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1297008		m_a_d	Peru (RMI20_peru)	C++20	0 / 100	187 ms	327680 KiB

peru

#include <bits/stdc++.h>
#include "peru.h"


using namespace std;

//#define int long long

const int MOD=1e9+7;

//Hatayı bul (bir ara)
int mod_expo(int a, int e) {
    if(e==0) return 1;
    if(e==1) return a;
    int val=mod_expo(a/2, e);
    int extra;
    a%2==1 ? extra=a : extra=1;
    return (((val*val) % MOD)*extra) % MOD;
}

int32_t solve(int32_t n, int32_t k, int32_t* arr) {
    /*int n, k;
    cin >> n >> k;*/
    int exponents[n];
    exponents[0]=1;
    for(int i=1; i<n; ++i) exponents[i]=(exponents[i-1]*23) % MOD;
    /*int arr[n];
    for(int i=0; i<n; ++i) cin >> arr[i];*/
    vector<vector<int>> dp(n, vector<int>(k, INT64_MAX));
    dp[0][0]=arr[0];
    for(int j=1; j<k; ++j) {
        dp[0][j]=max(dp[0][j-1], arr[j]);
    }
    for(int i=1; i<n; ++i) {
        int st_val=INT64_MAX;
        for(int j=0; j<k; ++j) {
            if(i-1-j<0) break;
            st_val=min(st_val, dp[i-1-j][j]);
        }
        int add=arr[i];
        for(int j=0; j<k; ++j) {
            if(i+j>=n) break;
            add=max(add, arr[i+j]);
            dp[i][j]=st_val+add;
        }
    }
    /*for(int i=0; i<n; ++i) {
        for(int j=0; j<k; ++j) {
            cout << dp[i][j] << " ";
        }
        cout << endl;
    }*/
    int ans[n];
    fill(ans, ans+n, INT64_MAX);
    int mod_ans=0;
    for(int i=0; i<n; ++i) {
        for(int j=0; j<k; ++j) {
            if(i-j<0) break;
            ans[i]=min(ans[i], dp[i-j][j]);
        }
    }
    for(int i=0; i<n; ++i) {
        mod_ans+=(ans[i]*exponents[n-i-1])%MOD;
        while(mod_ans>=MOD) mod_ans-=MOD;
    }
    return mod_ans;
}

컴파일 시 표준 에러 (stderr) 메시지

peru.cpp: In function 'int32_t solve(int32_t, int32_t, int32_t*)':
peru.cpp:29:46: warning: overflow in conversion from 'long int' to 'std::vector<int>::value_type' {aka 'int'} changes value from '9223372036854775807' to '-1' [-Woverflow]
   29 |     vector<vector<int>> dp(n, vector<int>(k, INT64_MAX));
      |                                              ^~~~~~~~~
peru.cpp:35:20: warning: overflow in conversion from 'long int' to 'int' changes value from '9223372036854775807' to '-1' [-Woverflow]
   35 |         int st_val=INT64_MAX;
      |                    ^~~~~~~~~

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