Submission #162242

#	Time	Username	Problem	Language	Result	Execution time	Memory
162242		jjwdi0	스트랩 (JOI14_straps)	C++11	100 / 100	104 ms	31868 KiB

straps

#include <bits/stdc++.h>
using namespace std;

int N, A[2005], B[2005], D[2005][4005];

int main() {
    scanf("%d", &N);
    for(int i=1; i<=N; i++) scanf("%d %d", A+i, B+i);
    for(int i=0; i<=N; i++) for(int j=0; j<=N+N; j++) D[i][j] = -1e9;
    D[0][N+1] = 0;
    int ans = 0;
    for(int i=0; i<N; i++) for(int j=0; j<=N+N; j++) {
        int k = min(N+N, j + A[i+1] - 1);
        if(~k) D[i+1][k] = max(D[i+1][k], D[i][j] + B[i+1]);
        D[i+1][j] = max(D[i+1][j], D[i][j]);
    }
    for(int i=0; i<=N; i++) ans = max(ans, D[N][N+i]);
    printf("%d\n", ans);
}

Compilation message (stderr)

straps.cpp: In function 'int main()':
straps.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
     ~~~~~^~~~~~~~~~
straps.cpp:8:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=1; i<=N; i++) scanf("%d %d", A+i, B+i);
                             ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 45 / 45
• Subtask 4: 45 / 45