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Submission #485900

# Submission time Handle Problem Language Result Execution time Memory
485900 2021-11-09T16:10:03 Z gavgav Fountain (eJOI20_fountain) C++17
100 / 100
 139 ms 7404 KB 
#include <stdio.h>
#define MAX_N 100000
#define MAX_M 200000
#define MAX_S 100000000000000
struct reservoir {
    long long diameters, capacity;
};
struct query {
    int level, volume, rasp;
};
int stack[MAX_N + 1], next[MAX_M + 1], liste[MAX_N + 1];
long long sumaNec[MAX_N + 1];
struct reservoir reservoirs[MAX_N + 1];
struct query queries[MAX_M + 1];
int main() {
    long long height, queries_number, top, i, j;
    long long sumaV;
    scanf( "%lld%lld", &height, &queries_number);
    reservoirs[0].diameters = 1000000001;
    reservoirs[0].capacity = 0;
    for (i = 1; i <= height; ++i)
        scanf( "%lld%lld", &reservoirs[i].diameters, &reservoirs[i].capacity);
    for (i = 1; i <= queries_number; ++i) {
        scanf( "%d%d", &queries[i].level, &queries[i].volume);
        next[i] = liste[queries[i].level];
        liste[queries[i].level] = i;
    }
    stack[0] = 0;
    sumaNec[0] = -MAX_S - 1;
    top = 0;
    sumaV = 0;
    long long left, middle, right;
    for (i = height; i >= 1; --i) {
        while ( reservoirs[i].diameters >= reservoirs[stack[top]].diameters ) {
            sumaV -= reservoirs[stack[top]].capacity;
            --top;
        }
        ++top;
        stack[top] = i;
        sumaNec[top] = sumaV;
        sumaV += reservoirs[i].capacity;
        j = liste[i];
        while (j != 0) {
            right = top + 1;
            left = 0;
            while (right - left > 1 ) {
                middle = (right + left) / 2;
                if (sumaV - sumaNec[middle] >= queries[j].volume)
                    left = middle;
                else
                    right = middle;
            }
            queries[j].rasp = stack[left];
            j = next[j];
        }
    }
    for (i = 1; i <= queries_number; ++i)
        printf("%d\n", queries[i].rasp);
}

Compilation message

fountain.cpp: In function 'int main()':
fountain.cpp:18:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |     scanf( "%lld%lld", &height, &queries_number);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fountain.cpp:22:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         scanf( "%lld%lld", &reservoirs[i].diameters, &reservoirs[i].capacity);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fountain.cpp:24:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |         scanf( "%d%d", &queries[i].level, &queries[i].volume);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 5576 KB Output is correct
2 Correct 96 ms 5900 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 80 ms 5576 KB Output is correct
9 Correct 96 ms 5900 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 47 ms 3444 KB Output is correct
12 Correct 139 ms 7404 KB Output is correct
13 Correct 102 ms 6720 KB Output is correct
14 Correct 85 ms 6508 KB Output is correct
15 Correct 73 ms 6528 KB Output is correct