Compilare: main.cpp: In function 'int main()': main.cpp:50:18: warning: unused variable 's1' [-Wunused-variable] long long n, s1, s2, s3, l1, l2, c1, c2; ^~ main.cpp:50:22: warning: unused variable 's2' [-Wunused-variable] long long n, s1, s2, s3, l1, l2, c1, c2; ^~ main.cpp:50:26: warning: unused variable 's3' [-Wunused-variable] long long n, s1, s2, s3, l1, l2, c1, c2; ^~ main.cpp:48:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("zone.in", "r", stdin); ^ main.cpp:49:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("zone.out", "w", stdout); ^ main.cpp:52:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &n); ^ main.cpp:53:55: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(int i = 1; i <= S; i++) scanf("%lld", &sum[i]); ^ main.cpp:58:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &a[i][j]); ^