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Submission #537042

# Submission time Handle Problem Language Result Execution time Memory
537042 2022-03-14T10:01:59 Z dantoh000 Popeala (CEOI16_popeala) C++14
0 / 100
 19 ms 1108 KB 
#include <bits/stdc++.h>
using namespace std;
int n,t,s;
int p[505];
int r[55][4005];
int dp[4005][55];
int ct[55][4005];
const int INF = 2000000001;
int opt[4005][55];
int cost(int l, int r){
    int ret = 0;
    for (int i = 0; i < n; i++){
        if (ct[i][r] - ct[i][l-1] == 0){
            ret++;
        }
    }
    ret *= (p[r] - p[l-1]);
    return ret;
}
void dnc(int s, int e, int l, int r, int k){

    int m = (s+e)/2;
    dp[m][k] = INF;
    //printf("k=%d: %d %d %d %d\n",k,s,e,l,r);
    for (int i = max(l,k-1); i <= min(r,m-1); i++){
        int nc = dp[i][k-1] + cost(i+1,m);
        //printf("group %d %d = %d\n",i+1,m,nc);
        if (dp[m][k] > nc){
            dp[m][k] = nc;
            opt[m][k] = i;
        }
    }
    //printf("opt %d %d = %d\n",m,k,opt[m][k]);
    //printf("dp %d %d = %d\n",m,k,dp[m][k]);
    if (s<m) dnc(s,m,l,opt[m][k],k);
    if (m<e) dnc(m+1,e,opt[m][k],r,k);
}

int main(){
    scanf("%d%d%d",&n,&t,&s);
    if (t > 500) return 0;
    for (int i = 1; i <= t; i++){
        scanf("%d",&p[i]);
        p[i] += p[i-1];
    }

    for (int i = 0; i < n; i++){
        for (int j = 1 ; j <= t; j++){
            char ch;
            scanf(" %c",&ch);
            r[i][j] = ch-'0';
            if (r[i][j] == 0) ct[i][j] = 1;
            ct[i][j] += ct[i][j-1];
        }
    }

    for (int i = 1; i <= t; i++){
        dp[i][1] = cost(1,i);
        //printf("%d ",dp[i][1]);
    }
    printf("%d\n",dp[t][1]);
    for (int i = 2; i <= s; i++){
        dnc(1,t,1,t,i);
        printf("%d\n",dp[t][i]);
    }

}

Compilation message

popeala.cpp: In function 'int main()':
popeala.cpp:40:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |     scanf("%d%d%d",&n,&t,&s);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
popeala.cpp:43:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |         scanf("%d",&p[i]);
      |         ~~~~~^~~~~~~~~~~~
popeala.cpp:50:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |             scanf(" %c",&ch);
      |             ~~~~~^~~~~~~~~~~

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 1 ms 596 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 19 ms 1108 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 74.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 1 ms 596 KB Output isn't correct
3 Halted 0 ms 0 KB -