제출 #529951

#제출 시각아이디문제언어결과실행 시간메모리
529951tht2005K개의 묶음 (IZhO14_blocks)C++17
100 / 100
99 ms2928 KiB
#include <bits/stdc++.h>

using namespace std;

const int N = 100005;
const int INF = 0x3f3f3f3f;
int n, kk, a[N], L[N], f[N], g[N], h[N];

int main() {
    scanf("%d %d", &n, &kk);
    for(int i = 1; i <= n; ++i) {
        scanf("%d", a + i);
        int k = i - 1;
        while(k > 0 && a[i] >= a[k])
            k = L[k];
        L[i] = k;
    }
    f[0] = 0;
    for(int i = 1; i <= n; ++i)
        f[i] = max(f[i - 1], a[i]);
    for(int i = 2; i <= kk; ++i) {
        for(int j = 0; j <= n; ++j) {
            g[j] = f[j];
            f[j] = INF;
        }
        h[i - 1] = INF;
        for(int j = i; j <= n; ++j) {
            h[j] = g[j - 1];
            for(int k = j - 1; k > L[j]; k = L[k])
                h[j] = min(h[j], h[k]);
            f[j] = min(f[L[j]], h[j] + a[j]);
        }
    }
    printf("%d", f[n]);
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

blocks.cpp: In function 'int main()':
blocks.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     scanf("%d %d", &n, &kk);
      |     ~~~~~^~~~~~~~~~~~~~~~~~
blocks.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |         scanf("%d", a + i);
      |         ~~~~~^~~~~~~~~~~~~
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