Submission #2408916

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Source Code Expand

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

int main() {
    int N;
    scanf("%d", &N);

    vector<long long> a(N);
    long long sum_a = 0;
    long long sum_b = 0;
    for (int i = 0; i < N; i++) {
        scanf("%lld", &a[i]);
        if (i % 2 == 0 && a[i] >= 0) sum_a += a[i];
        if (i % 2 != 0 && a[i] >= 0) sum_b += a[i];
    }

    vector<int> cnt;
    if (sum_a == 0 && sum_b == 0){
        long long max = a[0];
        int idx = 0;
        for (int i = 1; i < N; i++) {
            if (max < a[i]) {
                max = a[i];
                idx = i;
            }
        }
        printf("%lld\n", max);
        printf("%d\n", N-1);
        for (int i = N-1; i > idx; i--) printf("%d", i+1);
        for (int i = 0; i < idx; i++) printf("%d", 1);
    } else {
        if (sum_a < sum_b) {
            a.erase(a.begin());
            cnt.push_back(1);
        } 
        while (a.size() > 3) {
            if (a[0] < 0) {
                a.erase(a.begin());
                cnt.push_back(1);
                a.erase(a.begin());
                cnt.push_back(1);
            } else {
                if (a[2] >= 0) {
                    a.erase(a.begin(), a.begin()+2);
                    cnt.push_back(2);
                } else {
                    a.erase(a.begin()+1, a.begin()+3);
                    cnt.push_back(3);
                }
            }
        }
        if (a.size() == 3) {
            if (a[0] < 0) {
                cnt.push_back(1);
                cnt.push_back(1);
            } else {
                if (a[2] < 0) {
                    cnt.push_back(3);
                    cnt.push_back(2);
                } else {
                    cnt.push_back(2);
                }
            }
        } else if (a.size() == 2) {
            cnt.push_back(2);
        }
        printf("%lld\n", max(sum_a, sum_b));
        printf("%d\n", cnt.size());
        for (int i = 0; i < cnt.size(); i++){
            printf("%d\n", cnt[i]);
        }
    }

    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:68:34: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘std::vector<int>::size_type {aka long unsigned int}’ [-Wformat=]
         printf("%d\n", cnt.size());
                                  ^
./Main.cpp:6:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
                    ^
./Main.cpp:12:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld", &a[i]);
                             ^

Judge Result