제출 #577768

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
577768		patrikpavic2	Uplifting Excursion (BOI22_vault)	C++17	0 / 100	0 ms	212 KiB

vault

#include <cstdio>
#include <algorithm>

using namespace std;

typedef long long ll;

const int M = 32;
const int INF = 0x3f3f3f3f;

int m;
ll L, A[M], kol, B[M];
int dp[M * M];

ll greedy(ll cur){
    if(cur < 0) return 0;
    ll ret = 0;
    for(int i = 1;i <= m;i++){
        ll uz = min(B[i], cur / i);
        cur -= uz * i; ret += uz;
    }
    return cur == 0 ? ret : -1;
}

int main(){
    scanf("%d%lld", &m, &L);
    for(int i = m;i >= 1;i--){
        ll x; scanf("%lld", &x);
      //  A[i] += x; L += x * i;
    }
    ll bla; scanf("%lld", &bla);
    for(int i = 1;i <= m;i++){
        ll x; scanf("%lld", &x);
        A[i] += x;
    }
    for(int i = 1;i <= m;i++){
        B[i] = A[i] - min(A[i], (ll)M);
        A[i] -= B[i];
    }
    for(int i = 1;i < M * M + M;i++)
        dp[i] = -INF;
    for(int i = 1;i <= m;i++){
        for(int j = 0;j < A[i];j++){
            for(int k = M * M - 1;k >= i;k--)
                dp[k] = max(dp[k], 1 + dp[k - i]);
        }
    }
    ll odg = -1;
    for(int LL = 0;LL < M * M;LL++){
        if(dp[LL] < 0) continue;
        ll jos = greedy(L - LL);
        if(jos == -1) continue;
        odg = max(odg, dp[LL] + jos + bla);
    }
    if(odg < 0)
        printf("impossible\n");
    else
        printf("%lld\n", odg);
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

vault.cpp: In function 'int main()':
vault.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     scanf("%d%lld", &m, &L);
      |     ~~~~~^~~~~~~~~~~~~~~~~~
vault.cpp:28:20: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |         ll x; scanf("%lld", &x);
      |               ~~~~~^~~~~~~~~~~~
vault.cpp:31:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |     ll bla; scanf("%lld", &bla);
      |             ~~~~~^~~~~~~~~~~~~~
vault.cpp:33:20: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |         ll x; scanf("%lld", &x);
      |               ~~~~~^~~~~~~~~~~~
vault.cpp:41:15: warning: iteration 1023 invokes undefined behavior [-Waggressive-loop-optimizations]
   41 |         dp[i] = -INF;
      |         ~~~~~~^~~~~~
vault.cpp:40:21: note: within this loop
   40 |     for(int i = 1;i < M * M + M;i++)
      |                   ~~^~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3-1: 0 / 10
• Subtask 3-2: 0 / 10
• Subtask 4-1: 0 / 10
• Subtask 4-2: 0 / 10
• Subtask 5-1: 0 / 10
• Subtask 5-2: 0 / 10
• Subtask 6-1: 0 / 10
• Subtask 6-2: 0 / 10